Tempering-machine for pasteurizing.



' PATENTLD` DBO. 5, 1905.

A `L. STURGBS. TBMPERING MACHINE POR PASTEURIZING.

APPLIUATIoN FILED 0011224, 1004,v

UNITED STATEs PATENT, oEEIcE.

LEE ,sTUE.GE-s E VELMHUEsT, ILLINois.

. TEMPERING-MFACHINFORPASTEURIZING.

Specification of `Letters Patent.

Patented Dec. 5, 1905.

Appiioation fue@ June 24,1904. Serin No. 213,919.

To a/ZZ whom t may concern:

Be it known that I., LEE STURGES, a citizen of the United States, and a resident 0f Elm-` hurst, Du page county, Illinois, have invented the letters of reference marked thereon, which form a part of this specification.

This invention relates to improvements in tempering-machines, and more particularly to y a tempering-machine adapted for use intermediate a heater and a cooler in pasteurizing.

Heretofore in pasteurizing iiuids such as milk the milk has been delivered into and i heated in one machine andsuccessively passed therefrom through others adapted for succesy sively cooling the same. When so conducted,

. the operation requires a large expenditure of steam to raise the-cold fluid to the pasteurizing temperature-approximately 1600 or 1700 Fahrenheitand after passing from the heater a large quantity Of the cold water or other cooling agent is required to'reduce the milk -to the temperature desired at delivery.

The object of this invention is to provide-a tempering-machine adapted for use intermemachine and designed to first receive the milk diate the heating-machine and the coolingtherein and so constructed and operatedas to raise the temperature of the milk preliminary to the delivery to the heater and also acting to cool the milk delivered from the heater andv also economizing in the amount of water or other cooling agent required Iin cooling the same at the conclusion of the operation.

The invention has for its object the constructionof a strong, simple, and compact Vmachine capable of being taken apart readily for cleansing and so constructed as to render the operation thereof both in heating and cooling the milk entirely automatic, requiring no attention whatever from an operator.

The invention Aembraces many novel features; and it consists in the matters hereinafter described, and more fully pointed out and defined in the appended claims.

In the drawings, Figure 1 is a central ver-v tical section of a machine embodying my invention. Fig. 2 is an enlargedl sectional de- `adjustable brackets. kface elevation of the same.

tail of the driving mechanism andone ofthe Fig. 3 is an inner or Fig. 4 is a fragmentary top plan view of the machine.

v As shown in said drawings, said machine is constructed wholly of metal and comprises three metallic cylinders, preferably of tinned copper, and indicated by A, B, and C, nested one within the other, as shown in Fig. 1, and so arranged Vand supported as to permit the middle cylinder B to revolve freely between the outer and the inner cylinders A and C,

while -the latter are held`V stationary. As shown, inasmuch as theusual wooden or other tub is omitted (though obviously'the same could be used, if desired) the outer cylinder A -is supported lupon a suitable base or foundation a, provided on three sides with upwardlyextending standards a' ai, upon which is supported the driving mechanism hereinafter described. y As shown, said outer cylinder A is jacketed by an outer shell-A', which may be constructedof wood andcomprisea tub; but in the present instance it is shown constructed of sheet metal and is providedA at thebottom and top thereofwith an inlet-pipe a2 and an outlet-pipe a3, respectively, to admit cold water or other cooling fluid into the jacket or'tlie space between said outerl cylinder and the casing A. Said outer cylinder A is ared outwardly at its top to afford 'a receiving-gutter, and connected therein, also at the top, is an inlet-pipe ai, which opens into said gutter between said outer cylinder and the middle cylinderB and returns the milk thereto from4 i the heater, which may be of any kind and is not shown.y The'middle cylinder B is provided axially in its. bottom with an upwardly vand downwardly extending pivot-pin which at its lower end engages on a central bearing b in the bottom of the outer cylinder A. The

looy

c A pipe b4 communicates with said trough ing milk, issued July 14, 1903, No. 733,604. ',Rigidly secured on said cylinder B above the top of the outer cylinder A is a downwardly and outwardly extending flange b, which ex- `tends beyond the periphery of the said outer cylinder and covers the open end thereof, acting to exclude dust therefrom.

The inner cylinder C, which fits within the cylinder B, extends above the same'and is provided at its upper end with a peripheral downwardly and outwardly inclined liange c,

which extends beyond and covers the trough' 'der C is held from rotation and the middle cylinder B i's rotated from mechanism supported on the standards a and as. The driving mechanism comprises, as shown, a bracket c3, secured on the upper end of the standard a' and in which is journaled a horizontal stud- Shaft c4, provided at its outer end with a belt-pulley and at its. inner end with a beveled pinion c5, which meshes with a beveled gear c, journaled upon a vertical shaft c7, which, as shown, is threaded in said bracket c3. Rigidly secured upon said beveled gear c is a friction-roller cs, which may be of any suitable material to afford sufficient friction with the outer surface of the cylinder B or with vthe peripheral rib Z2 upon which said roller tracks. Similar brackets are secured on the standards a, in which like friction-rollers 012 are journaled, which serve as idlers and bear against said rib b and support the cylinder against the action of the friction-roller cs. On the shaft c7 in each bracket a bracket-arm 09 is secured, which projects beneath and supports the trough b3, and at the upper end of each of said shafts is a hooked bracket 010, which extends into and engages the cylinder C, holding the same from rotation. A wingnut ou engages the upper end of the shaft and holds the parts in operative relation.

Connected in the bottom of the outer cylinder A is a delivery-pipe a7, adapted to deliver the treated milk to a cooler of the usual or any preferred type.

The operation is as follows: The milk to be treated is delivered into the intake-pipe C and flows into the space between the cylinders C and B and thence into the annular trough b3, and thence to the heater of any preferred type, where it is raised to a pasteurizing temperature-approximately 16()O or 1700. The

heated uid is then returned to the outer cylinder A through the pipe and passes downwardly between the cold-water jacket inclosing said cylinder and the surface of the middle cylinder B, which is cooled by the milk in liowing upwardly on the other side and at last flows out, to the cooler through the pipe ai Inasmuch as the milk to be treated is delivered through the intake-pipe into the space between the inner and middle cylinders and flows upwardly separated from the hot milk only by the thin walls of the cylinder B, it is obvious that the hot milk contained between the walls of the cylinder B and the waterjacket acts to greatly raise the temperature of the milk flowing toward the heater and is in turn cooled thereby and by said exterior water-jacket. It follows that the inflowing milk is greatly raised in temperature by the heat absorbed from the heated milk and acts, together with the water-jacket, to cool the same, and thereby greatly economize both in time and energy required to raise the milk or fluid treated to the desired temperature. In the same manner the heated milk having been greatly cooled during its passage through the tempering-machine requires much less time and less cold water to reduce its temperature to the desired point than would otherwise be the case.

When it is desired to clean the machine, the wing-nuts ou are removed from the shaft c7 and the bracket arms or clamps 01 are removed, whereupon the cylinder B may be lifted out and thoroughly cleansed. If it is desired to remove the cylinder B, the setscrew c13 is removed from the bracket c, whereupon the bracket, with the frictionroller and bracket-arm c, may be swung to one side, permitting the cylinder B to be removed, carrying the annular tank or trough therewith.V Ordinarily it will be necessary only to release one of the brackets, though` if preferred, each of the brackets carrying the frictional drives cs and the idlers c may be turned to one side to afford greater clearance for the can.

Obviously many details of construction may be varied without departing from the principles of my invention.

1 claim as my inventionl. A tempering-machine for pasteurizing comprising a stationary, jacketed cylinder having a gutter at the top thereof of a revoluble cylinder therein and extending above the same, an inner stationary cylinder and a flange rigidly engaged on the revolving cylinder adapted to close said gutter.

2. A tempering-machine for pasteurizing, comprising a jacketedcylinder having` a gutter at the upper end thereof, a rotative cylinder therein, extending above the jacketed cylinder, a peripheral flange thereon, adapted to close said gutter, an inner cylinder, a supplypipe at the axis thereof, means adapted to hold the inner cylinder stationary and means for rotating the rotative cylinder.

3. A tempering-machine adapted to be conlOO ' cylinder adapted to cover said trough and ai nected between a heater and a cooler in pasteurizing comprising a jacketed cylinder having an inlet and outlet pipe opening into said jacket, a bearing at the bottom'of said cylinder, a revolving cylinder in said jacketed cylinder, a pin in the bottom thereof adapted to seat in said bearing, an inner stationary cylinder seated on the upper end of said pin, a

plurality of standards, an annular trough car-` riedA thereon above the jacketed cylinder, a flange on said revolving cylinder projecting into said trough, a fiange on the stationary peripheral flange on the side of the revolving cylinder adapted to extend over and cover theV 5. In amachine of the class described means for conducting two oppositely-lowing thin sheets of milk of dierent temperatures therethrough comprising,a revoluble cylinder lbetween said sheets, a water-jacket adjacent the outer sheetand a stationary cylinder adjacent the inner sheet, said revoluble and stationary cylinders being extended above theV waterjacket.

.6, .In a device of the class described the com-v bination with a jacketed cylinder of a gutter thereonextending above said cylinder, a rotary cylinder in said jacketed cylinder-'affording therewith an annular chamber for the reception of'heated milk, `a stationary cylinder Yin said rotative cylinder affording therewith an annularhamber, for the reception of cold milk iiowing oppositely'from the heated milk, an axial feed-pipe therein, rollers carried on said standards adapted to rotate the rotary cylinder and brackets carried on said standards adapted to engage in the stationary cylinder and hold it from movement.

` In testimony whereof I have hereunto subscribed my name in the presence of two subscribing witnesses., l p v LEE STURGES.

.Witnessesz l C. M. HILLS, Hat-ALMAR S. Rum).

fat tbetop thereof, a frame adapted to support Y vsaid cylinder, upwardly-directed standards 

